Revert "Bump configuration-as-code-plugin.version from 1836.vccda_4a_122a_a_e to 1849.v3a_d20568000a_ in /bom-weekly"

[basil]

Reverts jenkinsci/bom#3492

Breaks:

• com.cloudbees.jenkins.plugins.advisor.casc.AdvisorJCasCompatibilityTest#roundTripTest
• com.cloudbees.jenkins.plugins.awscredentials.ConfigurationAsCodeTest#roundTripTest
• hudson.plugins.active_directory.ActiveDirectoryJCasCCompatibilityTest#roundTripTest
• hudson.views.ViewJobFiltersConfigAsCodeTest#roundTripTest
• jenkins.metrics.RoundTripJCascMetricsTest#roundTripTest
• jenkins.plugins.git.BrowsersJCasCCompatibilityTest#roundTripTest
• jenkins.plugins.git.GitJCasCCompatibilityTest#roundTripTest
• jenkins.plugins.git.GitSCMJCasCCompatibilityTest#roundTripTest
• jenkins.plugins.git.GitToolJCasCCompatibilityTest#roundTripTest
• jenkins.plugins.git.GlobalLibraryWithLegacyJCasCCompatibilityTest#roundTripTest
• jenkins.plugins.git.GlobalLibraryWithModernJCasCCompatibilityTest#roundTripTest
• org.csanchez.jenkins.plugins.kubernetes.casc.CasCTest#roundTripTest
• org.csanchez.jenkins.plugins.kubernetes.casc.EnvVarCasCTest#roundTripTest
• org.csanchez.jenkins.plugins.kubernetes.casc.WorkspaceVolumeCasCTest#roundTripTest
• org.jenkinsci.plugins.docker.commons.CasCTest#roundTripTest
• org.jenkinsci.plugins.gitclient.JcascTest#roundTripTest
• org.jenkinsci.plugins.saml.SamlJCasCCompatibilityTest#roundTripTest